European Southern Observatory

Astronomers capture clearest image yet of Betelgeuse’s companion star

A team of astronomers has obtained the most definitive image to date of a star orbiting Betelgeuse, the red supergiant visible to the naked eye in the constellation Orion, ending what the lead researcher called "a century-long quest."

Astronomers detect first moon-like object beyond our solar system

Astronomers have found the first strong evidence for a moon-like object beyond our solar system — but it does not orbit a planet. Instead, the Jupiter-mass body circles a brown dwarf in the CD-35 2722 system, roughly 71 light-years from…